02%20ClassificationREV11

02%20ClassificationREV11 - Plant Classification Objectives...

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Plant Classification Objectives of today’s lecture: learn the scientific protocols used to name plants so they can be universally recognized learn about the terminology used to distinguish plants within a species learn some other common terms used to describe and classify plants
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Naming plants Hundreds of thousands of species of flowering plants have been described Thousands of plant species are used today in various areas of horticulture How can these plants be named in an unambiguous manner so that everyone understands what plant is being described by a particular name?
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The problem Which of these is the real Rose of Sharon? You call this potato but I call it ….?
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Scientific classification system Developed by Carl von Linne, a Swedish physician. He is better known as Linnaeus , the father of taxonomy In 1753, “Species Plantarum” was published, which described his new classification system
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The scientific classification system In Linnaeus' classification system, organisms are placed into categories called taxa Kingdom (plant, animal, bacteria, etc.) broad Division Class Order Family Genus Species narrow Members of each taxon share common characteristics
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The scientific classification system Kingdom Plantae (plant kingdom) Division Tracheophyta (vascular plants) Class Angiospermae (flowering plants) Subclass Monocotyledoneae (monocots) Order Liliales Family Liliaceae (lily family) Genus Allium Species Allium cepa (what is this?)
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The scientific classification system Linnaeus’ system of classification is based on stable morphological features, especially flower structure Avoids features that can vary depending on the age of the plant or the environment in which the plant is grown Incorporates the concept of evolution, i.e. plants with similar features share a common ancestor
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The Binomial System The last two taxa (genus and species) are referred to as the binomial system Each name has two components: Genus + specific epithet = species Prunus persica (peach) belongs to the Genus Prunus specific epithet is persica species name is Prunus persica
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The Binomial System Genus - describes a group of similar organisms, some of which may interbreed Species - members of a species will interbreed and produce similar progeny
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This note was uploaded on 02/07/2011 for the course HORT 100 taught by Professor Dana during the Spring '11 term at Purdue.

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02%20ClassificationREV11 - Plant Classification Objectives...

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